Khamis Abdullah Saifeldin (Arabic: خميس عبدالله سيف الدين; born 1 February 1976) is a Qatari runner who specialized in the 3000 metre steeplechase. He is of Sudanese descent. He represented Sudan at the 1996 Summer Olympics and Qatar at the 2000 Summer Olympics and the 2004 Summer Olympics. In addition he has medals from the Asian Athletics Championships, the Gulf Cooperation Council Championships, the West Asian Games and the Arab Athletics Championships.